Improvement in filling stop-motions for looms



J. M. LINSCOT'I. FILLING STOP-MOTIONS FOR LOOMS.

N0. 191,062. Patented May 22,1877;

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JOHN M. LINSGOTT, or wns'r BUXTON, MAINE.

IMPROVEMENT IN FILLING STOP-MOTIONS FORLOOMS.

Specification forming part of Letters Patent No. 91,062, dated May 22,1877 application filed 1 February (5 1877.

To all whom it may concern:

Be it known that I, JoHN M. LINSOOTT, of West Buxton, in the county ofYork and State of Maine, have invented certain new and usefulImprovements in Filling Stop-Motion for Looms; and I do hereby declarethat the following is a full, clear, and exact description thereof,which will enable others skilled in the art to which it pertains to makeand use the same, reference being had to the accompanying drawings, andto the letters of reference marked thereon, which form a part of thisspecification.

Figure 1 is a front view of the lay. Fig. 2 is a top plan of the frame,showing the breast beam and parts attached thereto. Fig. 3 is a bottomplan bf the lay. Fig. 4 is a bottom plan of the frame or breast beam,showing the knocking-off lever.

Same letters show like parts.

The object of this invention is to produce an improved fillingstop-motion for looms. It is more particularly applicable to what areknown as fancy-looms.

The general method by which the stop is efiected may be thus described:When the filling at each throw of the lay is carried entirely across theweb, thestop-motion does not come into operation but if the fillingbreaks or fails from any reason to reach the other side, then the loomis stopped.

a shows the lay. Upon the front of the cross-beam b are attached thedevices which constitute the motion. 0 is a vertical rod or slide,moving in guides d; it is kept pressed downward by the spring 0. Thisvertical rod has inclined surfaceskk at its lower end. As the lay isthrown forward, the lower inclined face moves up the inclined plane f.The rod or slide then drops into the recess h, and passes along theV-shaped projection i on the vibrating spring-arm j. The movement of thearm j is produced by the contact of the inclined side surface 10 on thevertical arm 0 with the projection t. j is pivoted at l, and. is forcedback into position against the stud m by the spring a.

When the vertical arm 0 has, by passing along the face of the V-shapedprojection 1', pushed the arm j backwardly somewhat, the spring-hook 0immediately catches the end of the arm j, and holds it in that positionuntil the vertical arm 0 is brought back again by the 1 lay motion, andpushes back again the hook o, and holds it back. This contrivance allowsof the return of the lay and the arm 0, which would otherwise strikeagainst the vertical edge of the inclined planef.

' I will now describe the efl'ect of the vertical motions of the arm 0.It operates the toggle-jointp, the outer end of which is pivoted tow thetop of the frame g. This frame moves on proper guides r. Attached tothis frame is a slotted carrier, s, having at its top fingers t, and atits lower end a rod surrounded by a coil-spring resting upon abase-piece.

Through the slot of the carrier is inserted a bolt or screw fastenedinto the frame q. Directly over the fingers t are arranged another setof fingers, t, in such manner as to pass when the carriers rises betweenthe fingers on the carrier.

The filling goes across the top of the fingers t, and, when unbroken andextending from one to the other side of the warp, the last threadthereof prevents the fingers t from passingv between the fingers t.

In such case, when the filling is unbroken, there is no occasion to stopthe motion of the loom, and the regular beats of the lay continue; butif the filling breaks, the fingers 6 pass between the fingers t, and themotion of the loom is thereby discontinued, and it remains to describehow this is effected.

When the fingers it pass between the fingers t, or, in other words, whenthe carrier 3 is raised by the spring, so as to permit of the two setsof fingers interlocking, the pin a is correspondingly lifted, andstrikes the arm '0 on the pivoted hook w, and thus allows the springcatch or button z, to drop down by reason of the pressure upwardlyexerted upon its rear end by a spring, as. The pivot of the button isseen at y. z showsa bent pivoted spring-arm, which, at its forward end,is intended to operate an arm or lever, which, operating upon anotherlever, slips the belt from the loom-shaft.

When the hook to allows the spring-catch ac to drop, as the lay movesforward, the catch strikes the bent part of the spring-arm z, thusoperating the arm as described, and stopping the loom. At the same timethat the.

button or catch an strikes the arm 2, itimmediately begins to pass upthe incline plane b, until it is lifted so high that it is again caughtand held by the pivoted hook u, and is so retained until again released,as before described.

It will thus be seen that when the filling is whole, and no necessityexists of stopping the loom, the beats ofgthe lay go on; but when thefilling is imperfect, or is not carried across the warp, the machine isstopped, as herein described.

It will be perceived, when the thread of the filling is over the fingerst, that although the frame rises, as when the two sets of fingersinterlock, yet the button a: is not released. In such case the stud inthe top part of the frame q moves through the slot of the carrier 8,--but the rod within the coil-spring rises, when the filling is perfect,only as far as they thread of the filling will permit the carriers torise, to the bottom of which the rod is attached. The

frame g still continues to rise; but it leaves the carrier where it isheld by the thread of the filling, and then continues its. upwardmovement contracting the coil-spring, the

' stud on the upper part of the frame moving in the slot of the carrier.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The combination, with the lay a, of the vertical spring rod or bar 0,having faces is and k, vibrating spring-arm toggle 1), frame q, carrier8, pin u, arm 0;, book 10, catch or button w, and bent spring-arm 2, asand for the purposes herein described.

2. The combination of the frame q, and mechanism for operating thesame,with slotted carrier 8 and fingers t and t, substantially as hereindescribed. V

- In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

JOHN M. LINSOOTT.

Witnesses: 1

WM. HENRY CLIFFORD, H. G. BRIGGS.

